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(No Model.)

G. LAUBE.

STOVE PIPE THIMBLE. No. 300,486. i, Patented June 1'7, 1884.

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UNITED STATES PATENT @rrrcs.

TIODFRIED LAUBE, OF HURON, DAKOTA TERRITORY.

STOVE-PIPE THIMBLE.

SPECIFICATION forming part of Letters Patent No. 300,486, dated June 17,1884.

Application filed November 5,1883. (No model.)

lb all whmn it may concern:

Be it known that I, GODFRIED LAUBE, of Huron, in the county. of Beadleand Territory of Dakota, have invented anew and Improved Stove'lipeThimble, of which the following is a full, clear, and exact description.

My invention consists of a thimble having a. flaring outer end ofsufficient size to admit the bead of the stove-pipe to be inserted asuitable distance for being secured by screws screwing obliquely throughthe outer end of the thinible against the bead, the said duter end ofthe thinible being made of sufficiently thick and substantial materialto hold the screws, all as hereinafter fully described.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure l is an end elevation of my improved thimble with a section ofstove-pipe fastened in it, and Fig. 2 is a section of Fig. 1 on the linea: o

I make the outer end portion, a, of the thimble sufficiently flaring toenable the stovepipe section Z) to enter, so that the head 0 will passin far enough to be secured by two or more set-screws, d, screwingobliquely through said outer part, a, of the thimble against the bend c,to secure it firmly and wedge it in tightly. In this case the part a ofthe thimble consists of a taper cast-metal ring, and the inner part, 6,consists of a taper sheet-metal ring. In this case the smaller end, f,of the cast-iron ring a enters the larger end, 9, of the sheet-metalring e, and the two are fastened together by rivets h, and the cast-ironring is made with a collar, 2', to bear against the outer face of thechimney'wall; and when the holes are to he made for the screws (Z theangle between the collar and the outer end of the flange is filled withmetal, making faces j square to the pitch of the screws, to facilitatethe boring and tapping for them and to increase the thickness of themetal for substantial support to the screws. The taper of the thimbleissuch that the end of the pipe b comes to a bearing near the inner end ofthe thimble at la when the bead comes to its hearing at Zin thecast-iron ring, so that the two points ofcontact afford substantialconnection, by which the thimble and pipe-section are more permanentlysecured than if they had contact at the bead only. The ring a also has ataper contraction at Z on the inner surface, to bring the bead c to abearing in suitable relation to the position of the screws (1, that theymay have their hearing directly on the side of the bead.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A tapering stove-pipe thimble provided at its forward end withinclined set-screws passing into the interior of the said thimlole,whereby the end of a stove-pipe may abut against the tapering innerportion of the thi'mble and be securely held in position bytheset-screws bearing on its annular bead, substantially as set forth.

2. The combination of the flaring ring a, formed with an annularcontraction or shoulder, Z, on its inner surface, and the inclinedscrews cl, passing through the ring to a position in front of saidcontraction or shoulder, with the section 6 secured to the inner edge ofthe ring a and contracting toward its rear end, whereby the end of astove-pipe may obtain a bearing in said section, as at It, and its beadbe clamped between the shoulder Z and the set-screws, substantially asset forth.

GODFRIED LAUBE.

Witnesses SIMMIE GOMBAR, DAVID GOMBAR.

